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Steam heat supply network energy storage auxiliary peak regulation control method and system, equipment and medium

A control method and technology of heating network, applied in control systems, lighting and heating equipment, steam generation, etc., can solve problems such as difficult to use effectively, waste of resources, and large steam energy storage capacity.

Inactive Publication Date: 2021-11-05
HUANENG CLEAN ENERGY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art that the steam energy storage capacity in the steam heating network is relatively large and difficult to be effectively utilized, thus resulting in waste of resources, and to provide a method for controlling peak regulation assisted by energy storage in the steam heating network

Method used

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  • Steam heat supply network energy storage auxiliary peak regulation control method and system, equipment and medium
  • Steam heat supply network energy storage auxiliary peak regulation control method and system, equipment and medium
  • Steam heat supply network energy storage auxiliary peak regulation control method and system, equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A steam heating network energy storage-assisted peak shaving control method, comprising the following steps:

[0050] Step 1) Obtain the operation data of the steam heating network;

[0051] Step 2) Based on the operation data of the steam heating network, the variation of the flow rate of heating and extracting steam is calculated;

[0052] Based on the variation of heating extraction steam flow, a nonlinear model of the heating extraction throttling system in the steam heating network is established, and the power increment estimate of the steam heating network is obtained based on the nonlinear model;

[0053] Step 3) Establishing a power increment generating loop based on the operating data of the steam heating network;

[0054] The specific method of the power increment generating loop is as follows: the power that the steam heating network can bear is obtained from the current safety limit of the steam heating network, which is recorded as the power increment, an...

Embodiment 2

[0058] A steam heating network energy storage-assisted peak-shaving control method, the power control system of the unit is divided into two parts: the original machine furnace coordination control system and the power increment control system; the power increment control system makes the setting of the power increment through PID control The value is equal to the estimated value. In this system, the predicted value of the power increment is obtained by the nonlinear model of the heating extraction throttling system, and the difference between the set value of the power increment obtained by the power increment generation loop is used as the power increment The input value of the control system; the input value in the coordinated control system of the original furnace is the difference between the power difference and the power increment estimate;

[0059] The nonlinear model of the heat extraction throttling system is:

[0060] ΔN e =ΔG e ·(h j -h n ) (1)

[0061] In for...

Embodiment 3

[0074] Except for the following content, all the other contents are the same as in Example 1.

[0075] The regulation of step 4) is specifically:

[0076] Calculate the difference between the predicted value of the power increment and the set value of the power increment to obtain the difference of the power increment;

[0077] The power increment difference is used as the input variable of the power increment control system, and the power increment difference is made to be zero through the PID control method.

[0078] The regulation of step 5) is specifically:

[0079] The difference between the power feedback value of the computer group and the estimated value of the power increment is used as the actual generating power of the original unit coordination control system, and the difference between the unit power setting value and the actual generating power of the original unit coordination control system is calculated. This difference is made zero by the PID control method...

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Abstract

The invention discloses a steam heat supply network energy storage auxiliary peak regulation control method and system, equipment and a medium, and belongs to the field of power generation. The specific operation is as follows that a load instruction is divided into two parts: a unit power set value and a power increment set value; a nonlinear model of a heat supply steam extraction throttling system calculates a power increment estimated value, the difference between the power increment estimated value and a power increment set value serves as an input value of a power increment control system, and PID control is conducted; and the input value in the original unit coordination control is obtained by subtracting a unit power feedback value and the power increment estimated value from the unit power set value. According to the steam heat supply network energy storage auxiliary peak regulation control method and system, the equipment and the medium, the power increment caused by heat supply steam extraction throttling is estimated by adopting the nonlinear model of the heat supply steam extraction throttling system, the measurement is simple, and the operation is easy; and meanwhile, a heat supply steam extraction butterfly valve is adjusted, stored energy of a steam heat supply network is called, the operation flexibility of a unit is improved, and the peak regulation capacity of the unit is improved.

Description

technical field [0001] The invention belongs to the field of power generation, and relates to a steam heating network energy storage auxiliary peak regulation control method, system, equipment and medium. Background technique [0002] Combined heat and power generation is a mature and energy-saving technology for clean and efficient use of coal. Combined heat and power units realize cascade utilization of energy by first generating high-grade heat energy and then supplying heat. Compared with the traditional condensing unit, the combined heat and power unit effectively utilizes part of the heat of the exhaust steam, greatly improving the utilization rate of primary energy and reducing the overall energy consumption. [0003] With the rapid development of solar power, wind power and other new energy power generation, my country has become the country with the largest scale and fastest development of new energy in the world. However, with the increase in the proportion of wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B35/18
CPCF22B35/18
Inventor 白烨彭烁刘明钟迪安航王宇蒋莉周贤姚国鹏
Owner HUANENG CLEAN ENERGY RES INST
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